#include <OgreRoot.h>
#include <OgreCamera.h>
#include <OgreViewport.h>
#include <OgreSceneManager.h>
#include <OgreRenderWindow.h>
#include <OgreEntity.h>
#include <OgreWindowEventUtilities.h>

#include <OISEvents.h>
#include <OISInputManager.h>
#include <OISKeyboard.h>
#include <OISMouse.h>

#include <BulletCollision/CollisionShapes/btHeightfieldTerrainShape.h>
#include <BulletDynamics/Dynamics/btRigidBody.h>
#include <BulletDynamics/Dynamics/btDiscreteDynamicsWorld.h>

#include <cmath>
